#include <cstdio>

const int SIZE = 100000000;
char buf[SIZE];

int main(int, char *argv[]) {
	std::FILE *fin = std::fopen(argv[1], "r");
	std::size_t cnt = std::fread(buf, sizeof(char), SIZE, fin);
	std::fclose(fin);
	std::FILE *fout = std::fopen(argv[1], "wb");
	std::fwrite(buf, sizeof(char), cnt, fout);
	std::fclose(fout);
	return 0;
}